CI: install any new portal dependencies if needed

Install any new portal dependencies in CI. These may be needed for
the API tests.

.github/workflows/api-and-integration-tests.yml

@@ -86,6 +86,7 @@ jobs:
         cd yoda/docker/compose
         docker exec portal.yoda sh -c 'set -x ; cd /var/www/yoda && git config remote.origin.fetch  "+refs/heads/*:refs/remotes/origin/*" && git pull'
         docker exec portal.yoda sh -c 'set -x ; cd /var/www/yoda && git checkout ${{ steps.extract_branch.outputs.branch }} || git checkout development'
+        docker exec portal.yoda sh -c 'set -x ; cd /var/www/yoda && source venv/bin/activate && venv/bin/pip3 install -r requirements.txt'
         docker exec portal.yoda sh -c 'set -x ; cd /var/www/yoda && git status'
         docker exec portal.yoda sh -c 'set -x ; touch /var/www/yoda/*.wsgi'